.resistor {
  --background: hsl(0, 0%, 100%);
  --knob-size: 4rem;

  background-image: linear-gradient(
    90deg,
    hsl(0, 0%, 85%) 65%,
    hsl(0, 0%, 80%) 65%
  );
  background-position: left 1rem center;
  background-repeat: repeat-y;
  background-size: .3125rem 1px;
  display: inline-block;
  height: calc(var(--knob-size) * 1.5);
  margin-bottom: 1rem;
  position: relative;
  width: var(--knob-size);
}

.resistor-heads {
  height: 3rem;
  left: 1.15rem;
  position: relative;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 1.5rem;
}

.resistor-heads::before,
.resistor-heads::after {
  background-color: hsl(38, 30%, 75%);
  background-image: radial-gradient(
    circle,
    hsl(38, 30%, 75%) 65%,
    hsl(38, 30%, 70%) 65%
  );
  background-position: right .25rem center;
  background-size: 100% 100%;
  border-radius: .25rem;
  box-sizing: border-box;
  content: '';
  display: block;
  height: .5rem;
  left: 0;
  position: absolute;
  width: 100%;
}

.resistor-heads::before {
  top: 0;
}

.resistor-heads::after {
  bottom: 0;
}

.resistor-body {
  background-color: hsl(38, 30%, 75%);
  background-image: linear-gradient(
    90deg,
    hsl(38, 30%, 75%) 65%,
    hsl(38, 30%, 70%) 65%
  );
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  height: 2.2rem;
  justify-content: space-around;
  margin-left: .1rem;
  position: relative;
  top: .4rem;
  width: 1.3rem;
  z-index: 1;
}

.band {
  background-color: green;
  background-image: linear-gradient(
    90deg,
    hsla(0, 0%, 0%, 0) 65%,
    hsla(0, 0%, 0%, .3) 65%
  );
  height: 10%;
}

.band:last-of-type {
  background-color: hsl(46, 100%, 64%);
}

.band.color-0 { background-color: hsl(0, 0%, 10%); }
.band.color-1 { background-color: hsl(22, 50%, 25%); }
.band.color-2 { background-color: hsl(0, 50%, 50%); }
.band.color-3 { background-color: hsl(30, 50%, 50%); }
.band.color-4 { background-color: hsl(60, 80%, 60%); }
.band.color-5 { background-color: hsl(120, 50%, 50%); }
.band.color-6 { background-color: hsl(240, 50%, 50%); }
.band.color-7 { background-color: hsl(300, 50%, 50%); }
.band.color-8 { background-color: hsl(0, 0%, 50%); }
.band.color-9 { background-color: hsl(0, 0%, 100%); }
.band.color--1 { background-color: hsl(46, 100%, 64%); }
.band.color--2 { background-color: hsl(0, 0%, 80%); }

.value {
  background-color: transparent;
  border: none;
  color: hsl(0, 0%, 30%);
  font-weight: 600;
  padding: .25rem;
  font-family: monospace;
  text-align: center;
  transform: rotate(-90deg);
  transform-origin: center;
  transition: all .3s ease;
  width: 100%;
}

.value::after {
  content: '\2126';
}

.value:focus,
.resistor:focus .value,
.resistor.focus .value {
  background-color: white;
  border: 1px solid gray;
  border-radius: .25rem;
  transform: rotate(0deg);
}